Of course, it wasn't as simple as that. When I came out of hospital I found I was getting it wrong with quite a lot of people, because they didn't look at it the same way as I did. And again, I think if you're going to die around the age of 50, far more people are involved than if you're dying when you're really old. You know, it's fairly threatening to people of your own age, they see you in the middle of a fairly busy life suddenly stopping-and they find it unacceptable. This business again of getting them to give me permission to die. . .

 Several of my friends still feel very angry and bitter about it and just won't accept it. In consequence they tell me I shouldn't accept it. I get all these stories about these heroic people who have organ after organ removed and say, I'm not going to die; I'm going to live; and they go on, year after year. It makes me feel I'm being terribly feeble. I feel rather guilty, as if what they're saying is, well, you're not trying hard enough.

 I can't really see what else I could be doing. I'm very confused about all this. I don't quite understand what I ought to do. Well, I suppose one could be a Chichester and rush across the Atlantic in a boat. But you know, really, I'm too tired for that. I think what I want to say to people is that if you're in this situation it isn't nearly as bad as people who try and put themselves in your position think it is.

 For one thing, other people come to it cold, whereas I've been doing my homework on it for the last two years. I've got used to the idea and have come to the point of acceptance gradually. The other thing is that they're feeling well and vigorous, with lots of things they're in the middle of doing.

状语中with lots of things they're in the middle of doing的with理解为伴随，还是表原因？